Postmodernism is the movement that responded to the political, cultural and intellectual developments that arose in the late 1960s, as well as to the preceding literary movements. Though I am focusing on literary postmodernism, it also applies to other areas, such as the fine arts, film and music. Some of the key aspects of postmodern literature include experimentation (see, for example, my list of experimental authors and several of the other movements on the Movements page, such as Metafiction, Magic Realism and Oulipo), fragmentation, unreliable narrators, authorial intervention, the rejection of plot and meaning, playfulness, references to and use of pop culture, discontinuous narrative, fantasy, distortion of time, inclusion of historical or even living people as characters, often with roles different from their known activities, playing with time, massive conspiracy theories and paranoia, use of surrealism and multiple, often conflicting perspectives. There are numerous authors on this site that can be considered postmodernist. The following is a very incomplete sample of some postmodern authors.
Selected postmodern authors
PMC: Related Readings
Postmodernism for the Uninitiated
What is Postmodernism?
61 essential postmodern reads: an annotated list
Postmodernist Literature A Few Recommendations
Top 10 postmodern books
The Postmodern Mystery Reading List 50 Essential Works